Windows Installer Folder Cleanup – Use Msizap to Remove Orphaned Cached Installer Data


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Windows Installer Folder Cleanup: while the use of system ends up with the bulk of installed program, file, which further affectes the performance of your Window OS; Msizap is a command-line tool that can delete configuration data that the Windows Installer keeps for products that install it, which includes the directory, files, registry subkeys, and registry entries in which Windows Installer stores the configuration data.

Windows Installer Folder Cleanup

Windows Installer Folder Cleanup

Windows Installer Folder Cleanup

Running msizap.exe with G parameter removes orphaned cached Windows Installer data files for all users. By running this command on the old Windows XP machine, I got permission to reduce the size of the C: \ Windows \ Installer directory from 3.6GB to 8,000MB.

This computer had many orphan files, which was due to continuous uninstall of software and software such as Java, Flash, Acrobat Reader, and other utility software. Yes, orphan files remain on your hard drive even after following the proper installation procedures.

Windows Installer Folder Cleanup

If you want to run msizap, you will first have to log in to the machine as an admin user and then launch a command window. Then next, you will have to navigate to the directory which consists of msizap.exe and then types the following command.

msizap !G

here the G option removes the orphaned cache files, the exclamation point then forces ‘yes’ response to any prompt.

While deleting orphan files, there should be no negative impact on your Windows installation, keep in mind that msizap is a powerful tool that can cause problems if used incorrectly.

Msizap can be downloaded as a part of the Microsoft Windows Server 2003 Support Tools or Windows Installer CleanUp Utility. I was unable to find the Windows installer cleanup utility by searching Microsoft’s download site, so note that if the above link is dead in the future, then the file name is msicuu2.exe.

You can find basically two versions of MSIZAP.EXE and they are MsiZapA.exe (for their use in Windows 95, Windows 98 and also in Windows ME), and MsiZapU.exe (for their use in Windows NT, Windows 2000 and even in Windows XP, and also Windows Server 2003). The appropriate executable must be renamed as MsiZap.exe.

Current msizap.exe options that are as follows:

msizap T[WA!] {msi package}

msizap T[WA!] {product code}


 msizap PWSA?!

* = remove all Windows Installer folders and reg keys; adjust shared DLL counts; stop Windows Installer service

T = for removing all info for the given product code.

P = Remove In-Progress key.

S = Remove Rollback Information

A = for any specified removal, just change ACLs to Admin Full Control

W = for all users (by default, only for the current user)

M = remove a managed patch registration info

G = remove orphaned cached Windows Installer data files (for all users)

? = verbose help

! = force ‘yes’ response to any prompt

Frequently Asked Questions

The below-given questions revolve surrounding the Windows Installer Folder Cleanup is nothing but FAQ which is asked by people on internet over the time. So, go throght it to understand it the most.

Is it safe to Delete Files in Windows Installer Folder?

Background Information: The C:\Windows\Installer folder is where some but not all applications uninstall files and folders are stored. … However, on a well-maintained computer, you may not have all that many orphaned files and msizap can only recover a small amount of drive space.

Can I move the Windows Installer Folder to another drive?

Move the download folder to another drive. c. Uninstall the applications that you no more use. If you still want to move the installer folder, you may right-click on the bat file and select Run as administrator.

What is The Installer Folder in Windows 10?

PatchCleaner is a free tool which can detect and safely remove junk files from the \Windows\Installer folder, potentially freeing up gigabytes of hard drive space. The folder contains Windows Installer-based setup programs and patch files and uses these whenever you want to modify or update the software.

What’s in the Windows Installer Folder?

The Windows Installer Cache, located in c:\windows\installer folder, is used to store important files for applications installed using the Windows Installer technology and should not be deleted. The installer cache is used to maintain (remove / update) the applications and patches installed on the machine.

Where is The Windows Installer Folder?

These installed MSI files are stored in the <drive>:\<WINDIR>\Installer folder on the Notification Server. This location is a hidden system folder. You can open Windows Explorer and enter “\windows\installer” in the address bar, assuming the default path, to go immediately to that directory.

Can you Compress the Windows Installer Folder?

Compressing Individual Files or Folders. Double-click the NTFS Volume that contains the folder or folders you want to compress. Right-click the file or folder you want to compress, and then click Properties. Click to select the Compress contents to save disk space check box, and then click OK.

Can I Delete Windows installer MSP Files?

C:\Windows\Installer is where Windows Installer stores cached copies of the setup packages (.msi) and setup patches (.msp) used for your currently installed programs. These files are required if you want to update, modify, or uninstall a program on your computer. Do not delete them blindly.

Find Words

By now you might be clear with all the information that are provided to you regarding ‘Windows Installer Folder Cleanup’ and the step by step process with illustration helps you to understand it the best. The above given FAQ also gives you the additional support to understand the 360 degree of the topic and this way you are going to get your issue resolved as well.

Hopefully the article stands on your expectation. If this is the case and if you find the article helpful enough to your query then, drop your comment in the comment section below.

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